iii

iii (pronounced "three eye") is an open-source distributed software platform that unifies workers, functions, and AI agents across Python, Rust, Node.js, and Go behind a single protocol. Instead of stitching together separate queues, state stores, vector indexes, and observability tooling, iii ships them as built-in primitives, with a unified console that surfaces workers, functions, triggers, streams, queues, traces, and logs in real time. AI agents are treated as ordinary workers, so planning, tool-running, and synthesis steps run on the same engine as the rest of the backend.

The platform is aimed at engineering teams building distributed systems or agentic applications who are tired of the quadratic integration cost of gluing together five SaaS dependencies. It bundles durable orchestration, OpenTelemetry tracing, WebSocket streaming, HTTP endpoints, event triggers, cron scheduling, queuing with backpressure, and vector storage. Install is a single curl-piped shell script and it runs locally (127.0.0.1) by default, so it sits closer to a self-hosted Temporal/Inngest hybrid than a managed agent cloud.

The project lives on GitHub (iii-hq/iii) with an active Discord. Pricing isn't published — the GitHub-first, self-hosted posture suggests the open-source core is free with a paid commercial tier likely to follow. Model integrations aren't dictated by the platform; you bring your own LLM in whichever language your worker is written in.